Synthese und Kristallstrukturen von Tris(glykolato)molybdän(VI) und Tris(pinakolato)molybdän(VI) / Syntheses and Crystal Structures of Tris(glycolato)molybdenum(VI) and Tris(pinacolato)molybdenum(VI)

Buth, Silke; Wočadlo, Sigrid; Neumüller, Bernhard; Weller, F.; Dehnicke, Kurt

doi:10.1515/znb-1992-0517

Zeitschrift Für Naturforschung B

1992

DOI: 10.1515/znb-1992-0517

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Synthese und Kristallstrukturen von Tris(glykolato)molybdän(VI) und Tris(pinakolato)molybdän(VI) / Syntheses and Crystal Structures of Tris(glycolato)molybdenum(VI) and Tris(pinacolato)molybdenum(VI)

Silke Buth

Sigrid Wočadlo

Bernhard Neumüller

et al.

Abstract: Syntheses and C rystal Structures o f T ris(glycolato)m olybdenum (V I) and T ris(pinacolato)m olybdenum (V I)Silke B uth, Sigrid W ocadlo, B ernhard N eum üller, F ra n k W eller und K u rt Dehnicke*

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Cited by 12 publications

References 7 publications

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Syntheses and Molecular Structures of New Calix[4]arene Molybdenum and Tungsten Complexes

Attner

Radius

2001

Chem. Eur. J.

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An unusual disproportionation reaction of the molybdenum(IV) and tungsten(IV) chlorides [MCl4L2] (M=Mo, L=Et2S, Et2O; M=W; L= Et2S) in the presence of p-tBu-calix[4]arene (Cax(OH)4) and triethylamine leads to d0 complexes [(CaxO4)[CaxO2(OH)2]M] (1) and d3 compounds (HNEt3)2[(CaxO4)2M2] (2). Complexes la (M = Mo), 1b (M = W), and the HCl adduct of 2a (M = Mo) have been structurally characterized. Compound 1a represents one of the few examples of a well-characterized molybdenum(VI) hexa-alkoxide complex of the type [Mo(OR)6]. Isolation and structural characterization of the side product [(CaxO4W)[kappa2(O)-kappa1(O)-CaxO3(OH)](CaxO4WCl)] (3) suggests the intermediacy of chloro-containing calix[4]arene complexes in these reaction mixtures. The reaction of 1a with HCI provides [CaxO4MoCl2] (4a), the first well-defined example of a mixed molybdenum(VI) alkoxide halide compound of the general formula [MoClx(OR)6-x].

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Syntheses and Molecular Structures of New Calix[4]arene Molybdenum and Tungsten Complexes

Attner

Radius

2001

Chem. Eur. J.

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Nitrido‐Komplexe von Übergangsmetallen

Dehnicke¹,

Strähle

1992

Angewandte Chemie

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137

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Nitrido Complexes of Transition Metals

Dehnicke¹,

Strähle

1992

Angew. Chem. Int. Ed. Engl.

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236

114

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In the past decade new syntheses and numerous structural determinations have enlivened studies in the still relatively young field of nitrido-transition-metal complexes. Aside from the terminal function of the nitrido ligand MEN:, this group also occurs as linear p,-bridging ligand in symmetric and asymmetric coordination; examples are known with almost rightangled bridge function; and, finally, it also functions as p3-bridging ligand. Accordingly, the fresh impulses given to synthetic chemistry by nitrido complexes are also many-sided: such complexes are used, inter aha, for the preparation of phosphaniminato and thionitrosyl complexes as well as for the synthesis of metallaheterocycles of the type MN,S, and MN,P2 with delocalized x-systems. In technetium chemistry complexes with terminal nitrido group are employed as radiopharmaceuticals, and, owing to the strong trans influence of the M=N: group, nitrido complexes of molybdenum are suitable as catalysts in olefin metathesis. Finally, nitrido complexes are also of wide interest in theoretical studies.

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Synthese und Kristallstrukturen von Tris(glykolato)molybdän(VI) und Tris(pinakolato)molybdän(VI) / Syntheses and Crystal Structures of Tris(glycolato)molybdenum(VI) and Tris(pinacolato)molybdenum(VI)

Abstract: Syntheses and C rystal Structures o f T ris(glycolato)m olybdenum (V I) and T ris(pinacolato)m olybdenum (V I)Silke B uth, Sigrid W ocadlo, B ernhard N eum üller, F ra n k W eller und K u rt Dehnicke*

Cited by 12 publications

References 7 publications

Syntheses and Molecular Structures of New Calix[4]arene Molybdenum and Tungsten Complexes

Syntheses and Molecular Structures of New Calix[4]arene Molybdenum and Tungsten Complexes

Nitrido‐Komplexe von Übergangsmetallen

Nitrido Complexes of Transition Metals

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